package Bity;

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main1 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNext()) { // 注意 while 处理多个 case
            String s = in.next();
            String[] strings = s.split(" ");
            StringBuilder stringBuilder = new StringBuilder();
            for (int i = 0; i < strings.length; i++) {
                stringBuilder.append(strings[i].toUpperCase().charAt(0));
            }
            System.out.print(stringBuilder);
        }
    }
}
